An extremely small sample of an ideal diatomic gas (with a molar mass of 28 g/mol) has the following distribution of molecular speeds: 1 molecule moving at 100 m/s, 2 molecules at 200 m/s, 4 at 300 m/s, and 3 at 400 m/s.

What is the rms speed of the distribution? I got 304.95 m/s or 305 m/s

What is the average kinetic energy of translational motion per molecule?

Thank you for the opportunity to help you with your question!

rms=(summation of v*v*(no of molecules)/no of molecules)power1/2
= 304.95
avg K.E.= summation of v*no of molecules /no of molecules = 290
temp= 103.4 k

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